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Merge branch 'v6v7' into devel

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Conflicts:
	arch/arm/include/asm/cacheflush.h
	arch/arm/include/asm/proc-fns.h
	arch/arm/mm/Kconfig
This commit is contained in:
Russell King 2011-03-16 23:35:26 +00:00
commit bd1274dc00
28 changed files with 191 additions and 189 deletions
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14
arch/arm/Kconfig
View file

@ -7,7 +7,7 @@ config ARM
select HAVE_MEMBLOCK
select RTC_LIB
select SYS_SUPPORTS_APM_EMULATION
select GENERIC_ATOMIC64 if (!CPU_32v6K || !AEABI)
select GENERIC_ATOMIC64 if (CPU_V6 || !CPU_32v6K || !AEABI)
select HAVE_OPROFILE if (HAVE_PERF_EVENTS)
select HAVE_ARCH_KGDB
select HAVE_KPROBES if (!XIP_KERNEL && !THUMB2_KERNEL)
@ -24,7 +24,7 @@ config ARM
select HAVE_PERF_EVENTS
select PERF_USE_VMALLOC
select HAVE_REGS_AND_STACK_ACCESS_API
select HAVE_HW_BREAKPOINT if (PERF_EVENTS && (CPU_V6 || CPU_V7))
select HAVE_HW_BREAKPOINT if (PERF_EVENTS && (CPU_V6 || CPU_V6K || CPU_V7))
select HAVE_C_RECORDMCOUNT
select HAVE_GENERIC_HARDIRQS
select HAVE_SPARSE_IRQ
@ -456,6 +456,7 @@ config ARCH_IXP4XX
config ARCH_DOVE
bool "Marvell Dove"
select CPU_V6K
select PCI
select ARCH_REQUIRE_GPIOLIB
select GENERIC_CLOCKEVENTS
@ -1059,7 +1060,7 @@ config XSCALE_PMU
default y
config CPU_HAS_PMU
depends on (CPU_V6 || CPU_V7 || XSCALE_PMU) && \
depends on (CPU_V6 || CPU_V6K || CPU_V7 || XSCALE_PMU) && \
(!ARCH_OMAP3 || OMAP3_EMU)
default y
bool
@ -1075,7 +1076,7 @@ endif
config ARM_ERRATA_411920
bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
depends on CPU_V6
depends on CPU_V6 || CPU_V6K
help
Invalidation of the Instruction Cache operation can
fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
@ -1318,6 +1319,7 @@ source "kernel/time/Kconfig"
config SMP
bool "Symmetric Multi-Processing (EXPERIMENTAL)"
depends on EXPERIMENTAL
depends on CPU_V6K || CPU_V7
depends on GENERIC_CLOCKEVENTS
depends on REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP || \
MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || \
@ -1429,7 +1431,7 @@ config HZ
config THUMB2_KERNEL
bool "Compile the kernel in Thumb-2 mode (EXPERIMENTAL)"
depends on CPU_V7 && !CPU_V6 && EXPERIMENTAL
depends on CPU_V7 && !CPU_V6 && !CPU_V6K && EXPERIMENTAL
select AEABI
select ARM_ASM_UNIFIED
help
@ -1963,7 +1965,7 @@ config FPE_FASTFPE
config VFP
bool "VFP-format floating point maths"
depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
depends on CPU_V6 || CPU_V6K || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
help
Say Y to include VFP support code in the kernel. This is needed
if your hardware includes a VFP unit.

1
arch/arm/Makefile
View file

@ -89,6 +89,7 @@ tune-$(CONFIG_CPU_XSCALE) :=$(call cc-option,-mtune=xscale,-mtune=strongarm110)
tune-$(CONFIG_CPU_XSC3) :=$(call cc-option,-mtune=xscale,-mtune=strongarm110) -Wa,-mcpu=xscale
tune-$(CONFIG_CPU_FEROCEON) :=$(call cc-option,-mtune=marvell-f,-mtune=xscale)
tune-$(CONFIG_CPU_V6) :=$(call cc-option,-mtune=arm1136j-s,-mtune=strongarm)
tune-$(CONFIG_CPU_V6K) :=$(call cc-option,-mtune=arm1136j-s,-mtune=strongarm)
ifeq ($(CONFIG_AEABI),y)
CFLAGS_ABI :=-mabi=aapcs-linux -mno-thumb-interwork

2
arch/arm/boot/compressed/head.S
View file

@ -21,7 +21,7 @@
#if defined(CONFIG_DEBUG_ICEDCC)
#ifdef CONFIG_CPU_V6
#if defined(CONFIG_CPU_V6) || defined(CONFIG_CPU_V6K)
.macro loadsp, rb, tmp
.endm
.macro writeb, ch, rb

2
arch/arm/boot/compressed/misc.c
View file

@ -36,7 +36,7 @@ extern void error(char *x);
#ifdef CONFIG_DEBUG_ICEDCC
#ifdef CONFIG_CPU_V6
#if defined(CONFIG_CPU_V6) || defined(CONFIG_CPU_V6K)
static void icedcc_putc(int ch)
{

60
arch/arm/include/asm/bitops.h
View file

@ -148,15 +148,19 @@ ____atomic_test_and_change_bit(unsigned int bit, volatile unsigned long *p)
* Note that bit 0 is defined to be 32-bit word bit 0, not byte 0 bit 0.
*/
/*
* Native endian assembly bitops. nr = 0 -> word 0 bit 0.
*/
extern void _set_bit(int nr, volatile unsigned long * p);
extern void _clear_bit(int nr, volatile unsigned long * p);
extern void _change_bit(int nr, volatile unsigned long * p);
extern int _test_and_set_bit(int nr, volatile unsigned long * p);
extern int _test_and_clear_bit(int nr, volatile unsigned long * p);
extern int _test_and_change_bit(int nr, volatile unsigned long * p);
/*
* Little endian assembly bitops. nr = 0 -> byte 0 bit 0.
*/
extern void _set_bit_le(int nr, volatile unsigned long * p);
extern void _clear_bit_le(int nr, volatile unsigned long * p);
extern void _change_bit_le(int nr, volatile unsigned long * p);
extern int _test_and_set_bit_le(int nr, volatile unsigned long * p);
extern int _test_and_clear_bit_le(int nr, volatile unsigned long * p);
extern int _test_and_change_bit_le(int nr, volatile unsigned long * p);
extern int _find_first_zero_bit_le(const void * p, unsigned size);
extern int _find_next_zero_bit_le(const void * p, int size, int offset);
extern int _find_first_bit_le(const unsigned long *p, unsigned size);
@ -165,12 +169,6 @@ extern int _find_next_bit_le(const unsigned long *p, int size, int offset);
/*
* Big endian assembly bitops. nr = 0 -> byte 3 bit 0.
*/
extern void _set_bit_be(int nr, volatile unsigned long * p);
extern void _clear_bit_be(int nr, volatile unsigned long * p);
extern void _change_bit_be(int nr, volatile unsigned long * p);
extern int _test_and_set_bit_be(int nr, volatile unsigned long * p);
extern int _test_and_clear_bit_be(int nr, volatile unsigned long * p);
extern int _test_and_change_bit_be(int nr, volatile unsigned long * p);
extern int _find_first_zero_bit_be(const void * p, unsigned size);
extern int _find_next_zero_bit_be(const void * p, int size, int offset);
extern int _find_first_bit_be(const unsigned long *p, unsigned size);
@ -180,33 +178,26 @@ extern int _find_next_bit_be(const unsigned long *p, int size, int offset);
/*
* The __* form of bitops are non-atomic and may be reordered.
*/
#define ATOMIC_BITOP_LE(name,nr,p) \
(__builtin_constant_p(nr) ? \
____atomic_##name(nr, p) : \
_##name##_le(nr,p))
#define ATOMIC_BITOP_BE(name,nr,p) \
(__builtin_constant_p(nr) ? \
____atomic_##name(nr, p) : \
_##name##_be(nr,p))
#define ATOMIC_BITOP(name,nr,p) \
(__builtin_constant_p(nr) ? ____atomic_##name(nr, p) : _##name(nr,p))
#else
#define ATOMIC_BITOP_LE(name,nr,p) _##name##_le(nr,p)
#define ATOMIC_BITOP_BE(name,nr,p) _##name##_be(nr,p)
#define ATOMIC_BITOP(name,nr,p) _##name(nr,p)
#endif
#define NONATOMIC_BITOP(name,nr,p) \
(____nonatomic_##name(nr, p))
/*
* Native endian atomic definitions.
*/
#define set_bit(nr,p) ATOMIC_BITOP(set_bit,nr,p)
#define clear_bit(nr,p) ATOMIC_BITOP(clear_bit,nr,p)
#define change_bit(nr,p) ATOMIC_BITOP(change_bit,nr,p)
#define test_and_set_bit(nr,p) ATOMIC_BITOP(test_and_set_bit,nr,p)
#define test_and_clear_bit(nr,p) ATOMIC_BITOP(test_and_clear_bit,nr,p)
#define test_and_change_bit(nr,p) ATOMIC_BITOP(test_and_change_bit,nr,p)
#ifndef __ARMEB__
/*
* These are the little endian, atomic definitions.
*/
#define set_bit(nr,p) ATOMIC_BITOP_LE(set_bit,nr,p)
#define clear_bit(nr,p) ATOMIC_BITOP_LE(clear_bit,nr,p)
#define change_bit(nr,p) ATOMIC_BITOP_LE(change_bit,nr,p)
#define test_and_set_bit(nr,p) ATOMIC_BITOP_LE(test_and_set_bit,nr,p)
#define test_and_clear_bit(nr,p) ATOMIC_BITOP_LE(test_and_clear_bit,nr,p)
#define test_and_change_bit(nr,p) ATOMIC_BITOP_LE(test_and_change_bit,nr,p)
#define find_first_zero_bit(p,sz) _find_first_zero_bit_le(p,sz)
#define find_next_zero_bit(p,sz,off) _find_next_zero_bit_le(p,sz,off)
#define find_first_bit(p,sz) _find_first_bit_le(p,sz)
@ -215,16 +206,9 @@ extern int _find_next_bit_be(const unsigned long *p, int size, int offset);
#define WORD_BITOFF_TO_LE(x) ((x))
#else
/*
* These are the big endian, atomic definitions.
*/
#define set_bit(nr,p) ATOMIC_BITOP_BE(set_bit,nr,p)
#define clear_bit(nr,p) ATOMIC_BITOP_BE(clear_bit,nr,p)
#define change_bit(nr,p) ATOMIC_BITOP_BE(change_bit,nr,p)
#define test_and_set_bit(nr,p) ATOMIC_BITOP_BE(test_and_set_bit,nr,p)
#define test_and_clear_bit(nr,p) ATOMIC_BITOP_BE(test_and_clear_bit,nr,p)
#define test_and_change_bit(nr,p) ATOMIC_BITOP_BE(test_and_change_bit,nr,p)
#define find_first_zero_bit(p,sz) _find_first_zero_bit_be(p,sz)
#define find_next_zero_bit(p,sz,off) _find_next_zero_bit_be(p,sz,off)
#define find_first_bit(p,sz) _find_first_bit_be(p,sz)

3
arch/arm/include/asm/cacheflush.h
View file

@ -187,7 +187,8 @@ extern void copy_to_user_page(struct vm_area_struct *, struct page *,
* Optimized __flush_icache_all for the common cases. Note that UP ARMv7
* will fall through to use __flush_icache_all_generic.
*/
#if (defined(CONFIG_CPU_V7) && defined(CONFIG_CPU_V6)) || \
#if (defined(CONFIG_CPU_V7) && \
(defined(CONFIG_CPU_V6) || defined(CONFIG_CPU_V6K))) || \
defined(CONFIG_SMP_ON_UP)
#define __flush_icache_preferred __cpuc_flush_icache_all
#elif __LINUX_ARM_ARCH__ >= 7 && defined(CONFIG_SMP)

2
arch/arm/include/asm/glue-cache.h
View file

@ -109,7 +109,7 @@
# define MULTI_CACHE 1
#endif
#if defined(CONFIG_CPU_V6)
#if defined(CONFIG_CPU_V6) || defined(CONFIG_CPU_V6K)
//# ifdef _CACHE
# define MULTI_CACHE 1
//# else

2
arch/arm/include/asm/glue-proc.h
View file

@ -230,7 +230,7 @@
# endif
#endif
#ifdef CONFIG_CPU_V6
#if defined(CONFIG_CPU_V6) || defined(CONFIG_CPU_V6K)
# ifdef CPU_NAME
# undef MULTI_CPU
# define MULTI_CPU

53
arch/arm/include/asm/spinlock.h
View file

@ -5,17 +5,52 @@
#error SMP not supported on pre-ARMv6 CPUs
#endif
/*
* sev and wfe are ARMv6K extensions. Uniprocessor ARMv6 may not have the K
* extensions, so when running on UP, we have to patch these instructions away.
*/
#define ALT_SMP(smp, up) \
"9998: " smp "\n" \
" .pushsection \".alt.smp.init\", \"a\"\n" \
" .long 9998b\n" \
" " up "\n" \
" .popsection\n"
#ifdef CONFIG_THUMB2_KERNEL
#define SEV ALT_SMP("sev.w", "nop.w")
/*
* For Thumb-2, special care is needed to ensure that the conditional WFE
* instruction really does assemble to exactly 4 bytes (as required by
* the SMP_ON_UP fixup code). By itself "wfene" might cause the
* assembler to insert a extra (16-bit) IT instruction, depending on the
* presence or absence of neighbouring conditional instructions.
*
* To avoid this unpredictableness, an approprite IT is inserted explicitly:
* the assembler won't change IT instructions which are explicitly present
* in the input.
*/
#define WFE(cond) ALT_SMP( \
"it " cond "\n\t" \
"wfe" cond ".n", \
\
"nop.w" \
)
#else
#define SEV ALT_SMP("sev", "nop")
#define WFE(cond) ALT_SMP("wfe" cond, "nop")
#endif
static inline void dsb_sev(void)
{
#if __LINUX_ARM_ARCH__ >= 7
__asm__ __volatile__ (
"dsb\n"
"sev"
SEV
);
#elif defined(CONFIG_CPU_32v6K)
#else
__asm__ __volatile__ (
"mcr p15, 0, %0, c7, c10, 4\n"
"sev"
SEV
: : "r" (0)
);
#endif
@ -46,9 +81,7 @@ static inline void arch_spin_lock(arch_spinlock_t *lock)
__asm__ __volatile__(
"1: ldrex %0, [%1]\n"
" teq %0, #0\n"
#ifdef CONFIG_CPU_32v6K
" wfene\n"
#endif
WFE("ne")
" strexeq %0, %2, [%1]\n"
" teqeq %0, #0\n"
" bne 1b"
@ -107,9 +140,7 @@ static inline void arch_write_lock(arch_rwlock_t *rw)
__asm__ __volatile__(
"1: ldrex %0, [%1]\n"
" teq %0, #0\n"
#ifdef CONFIG_CPU_32v6K
" wfene\n"
#endif
WFE("ne")
" strexeq %0, %2, [%1]\n"
" teq %0, #0\n"
" bne 1b"
@ -176,9 +207,7 @@ static inline void arch_read_lock(arch_rwlock_t *rw)
"1: ldrex %0, [%2]\n"
" adds %0, %0, #1\n"
" strexpl %1, %0, [%2]\n"
#ifdef CONFIG_CPU_32v6K
" wfemi\n"
#endif
WFE("mi")
" rsbpls %0, %1, #0\n"
" bmi 1b"
: "=&r" (tmp), "=&r" (tmp2)

17
arch/arm/include/asm/system.h
View file

@ -347,6 +347,7 @@ void cpu_idle_wait(void);
#include <asm-generic/cmpxchg-local.h>
#if __LINUX_ARM_ARCH__ < 6
/* min ARCH < ARMv6 */
#ifdef CONFIG_SMP
#error "SMP is not supported on this platform"
@ -365,7 +366,7 @@ void cpu_idle_wait(void);
#include <asm-generic/cmpxchg.h>
#endif
#else /* __LINUX_ARM_ARCH__ >= 6 */
#else /* min ARCH >= ARMv6 */
extern void __bad_cmpxchg(volatile void *ptr, int size);
@ -379,7 +380,7 @@ static inline unsigned long __cmpxchg(volatile void *ptr, unsigned long old,
unsigned long oldval, res;
switch (size) {
#ifdef CONFIG_CPU_32v6K
#ifndef CONFIG_CPU_V6 /* min ARCH >= ARMv6K */
case 1:
do {
asm volatile("@ __cmpxchg1\n"
@ -404,7 +405,7 @@ static inline unsigned long __cmpxchg(volatile void *ptr, unsigned long old,
: "memory", "cc");
} while (res);
break;
#endif /* CONFIG_CPU_32v6K */
#endif
case 4:
do {
asm volatile("@ __cmpxchg4\n"
@ -450,12 +451,12 @@ static inline unsigned long __cmpxchg_local(volatile void *ptr,
unsigned long ret;
switch (size) {
#ifndef CONFIG_CPU_32v6K
#ifdef CONFIG_CPU_V6 /* min ARCH == ARMv6 */
case 1:
case 2:
ret = __cmpxchg_local_generic(ptr, old, new, size);
break;
#endif /* !CONFIG_CPU_32v6K */
#endif
default:
ret = __cmpxchg(ptr, old, new, size);
}
@ -469,7 +470,7 @@ static inline unsigned long __cmpxchg_local(volatile void *ptr,
(unsigned long)(n), \
sizeof(*(ptr))))
#ifdef CONFIG_CPU_32v6K
#ifndef CONFIG_CPU_V6 /* min ARCH >= ARMv6K */
/*
* Note : ARMv7-M (currently unsupported by Linux) does not support
@ -524,11 +525,11 @@ static inline unsigned long long __cmpxchg64_mb(volatile void *ptr,
(unsigned long long)(o), \
(unsigned long long)(n)))
#else /* !CONFIG_CPU_32v6K */
#else /* min ARCH = ARMv6 */
#define cmpxchg64_local(ptr, o, n) __cmpxchg64_local_generic((ptr), (o), (n))
#endif /* CONFIG_CPU_32v6K */
#endif
#endif /* __LINUX_ARM_ARCH__ >= 6 */

11
arch/arm/include/asm/tls.h
View file

@ -28,15 +28,14 @@
#define tls_emu 1
#define has_tls_reg 1
#define set_tls set_tls_none
#elif __LINUX_ARM_ARCH__ >= 7 || \
(__LINUX_ARM_ARCH__ == 6 && defined(CONFIG_CPU_32v6K))
#define tls_emu 0
#define has_tls_reg 1
#define set_tls set_tls_v6k
#elif __LINUX_ARM_ARCH__ == 6
#elif defined(CONFIG_CPU_V6)
#define tls_emu 0
#define has_tls_reg (elf_hwcap & HWCAP_TLS)
#define set_tls set_tls_v6
#elif defined(CONFIG_CPU_32v6K)
#define tls_emu 0
#define has_tls_reg 1
#define set_tls set_tls_v6k
#else
#define tls_emu 0
#define has_tls_reg 0

18
arch/arm/kernel/armksyms.c
View file

@ -140,24 +140,18 @@ EXPORT_SYMBOL(__aeabi_ulcmp);
#endif
/* bitops */
EXPORT_SYMBOL(_set_bit_le);
EXPORT_SYMBOL(_test_and_set_bit_le);
EXPORT_SYMBOL(_clear_bit_le);
EXPORT_SYMBOL(_test_and_clear_bit_le);
EXPORT_SYMBOL(_change_bit_le);
EXPORT_SYMBOL(_test_and_change_bit_le);
EXPORT_SYMBOL(_set_bit);
EXPORT_SYMBOL(_test_and_set_bit);
EXPORT_SYMBOL(_clear_bit);
EXPORT_SYMBOL(_test_and_clear_bit);
EXPORT_SYMBOL(_change_bit);
EXPORT_SYMBOL(_test_and_change_bit);
EXPORT_SYMBOL(_find_first_zero_bit_le);
EXPORT_SYMBOL(_find_next_zero_bit_le);
EXPORT_SYMBOL(_find_first_bit_le);
EXPORT_SYMBOL(_find_next_bit_le);
#ifdef __ARMEB__
EXPORT_SYMBOL(_set_bit_be);
EXPORT_SYMBOL(_test_and_set_bit_be);
EXPORT_SYMBOL(_clear_bit_be);
EXPORT_SYMBOL(_test_and_clear_bit_be);
EXPORT_SYMBOL(_change_bit_be);
EXPORT_SYMBOL(_test_and_change_bit_be);
EXPORT_SYMBOL(_find_first_zero_bit_be);
EXPORT_SYMBOL(_find_next_zero_bit_be);
EXPORT_SYMBOL(_find_first_bit_be);

2
arch/arm/kernel/debug.S
View file

@ -25,7 +25,7 @@
.macro addruart, rp, rv
.endm
#if defined(CONFIG_CPU_V6)
#if defined(CONFIG_CPU_V6) || defined(CONFIG_CPU_V6K)
.macro senduart, rd, rx
mcr p14, 0, \rd, c0, c5, 0

14
arch/arm/kernel/entry-header.S
View file

@ -76,13 +76,13 @@
#ifndef CONFIG_THUMB2_KERNEL
.macro svc_exit, rpsr
msr spsr_cxsf, \rpsr
#if defined(CONFIG_CPU_32v6K)
clrex @ clear the exclusive monitor
ldmia sp, {r0 - pc}^ @ load r0 - pc, cpsr
#elif defined (CONFIG_CPU_V6)
#if defined(CONFIG_CPU_V6)
ldr r0, [sp]
strex r1, r2, [sp] @ clear the exclusive monitor
ldmib sp, {r1 - pc}^ @ load r1 - pc, cpsr
#elif defined(CONFIG_CPU_32v6K)
clrex @ clear the exclusive monitor
ldmia sp, {r0 - pc}^ @ load r0 - pc, cpsr
#else
ldmia sp, {r0 - pc}^ @ load r0 - pc, cpsr
#endif
@ -92,10 +92,10 @@
ldr r1, [sp, #\offset + S_PSR] @ get calling cpsr
ldr lr, [sp, #\offset + S_PC]! @ get pc
msr spsr_cxsf, r1 @ save in spsr_svc
#if defined(CONFIG_CPU_32v6K)
clrex @ clear the exclusive monitor
#elif defined (CONFIG_CPU_V6)
#if defined(CONFIG_CPU_V6)
strex r1, r2, [sp] @ clear the exclusive monitor
#elif defined(CONFIG_CPU_32v6K)
clrex @ clear the exclusive monitor
#endif
.if \fast
ldmdb sp, {r1 - lr}^ @ get calling r1 - lr

4
arch/arm/kernel/perf_event_v6.c
View file

@ -30,7 +30,7 @@
* enable the interrupt.
*/
#ifdef CONFIG_CPU_V6
#if defined(CONFIG_CPU_V6) || defined(CONFIG_CPU_V6K)
enum armv6_perf_types {
ARMV6_PERFCTR_ICACHE_MISS = 0x0,
ARMV6_PERFCTR_IBUF_STALL = 0x1,
@ -669,4 +669,4 @@ static const struct arm_pmu *__init armv6mpcore_pmu_init(void)
{
return NULL;
}
#endif /* CONFIG_CPU_V6 */
#endif /* CONFIG_CPU_V6 || CONFIG_CPU_V6K */

50
arch/arm/lib/bitops.h
View file

@ -1,44 +1,52 @@
#if __LINUX_ARM_ARCH__ >= 6 && defined(CONFIG_CPU_32v6K)
#if __LINUX_ARM_ARCH__ >= 6
.macro bitop, instr
ands ip, r1, #3
strneb r1, [ip] @ assert word-aligned
mov r2, #1
and r3, r0, #7 @ Get bit offset
add r1, r1, r0, lsr #3 @ Get byte offset
and r3, r0, #31 @ Get bit offset
mov r0, r0, lsr #5
add r1, r1, r0, lsl #2 @ Get word offset
mov r3, r2, lsl r3
1: ldrexb r2, [r1]
1: ldrex r2, [r1]
\instr r2, r2, r3
strexb r0, r2, [r1]
strex r0, r2, [r1]
cmp r0, #0
bne 1b
mov pc, lr
bx lr
.endm
.macro testop, instr, store
and r3, r0, #7 @ Get bit offset
ands ip, r1, #3
strneb r1, [ip] @ assert word-aligned
mov r2, #1
add r1, r1, r0, lsr #3 @ Get byte offset
and r3, r0, #31 @ Get bit offset
mov r0, r0, lsr #5
add r1, r1, r0, lsl #2 @ Get word offset
mov r3, r2, lsl r3 @ create mask
smp_dmb
1: ldrexb r2, [r1]
1: ldrex r2, [r1]
ands r0, r2, r3 @ save old value of bit
\instr r2, r2, r3 @ toggle bit
strexb ip, r2, [r1]
\instr r2, r2, r3 @ toggle bit
strex ip, r2, [r1]
cmp ip, #0
bne 1b
smp_dmb
cmp r0, #0
movne r0, #1
2: mov pc, lr
2: bx lr
.endm
#else
.macro bitop, instr
and r2, r0, #7
ands ip, r1, #3
strneb r1, [ip] @ assert word-aligned
and r2, r0, #31
mov r0, r0, lsr #5
mov r3, #1
mov r3, r3, lsl r2
save_and_disable_irqs ip
ldrb r2, [r1, r0, lsr #3]
ldr r2, [r1, r0, lsl #2]
\instr r2, r2, r3
strb r2, [r1, r0, lsr #3]
str r2, [r1, r0, lsl #2]
restore_irqs ip
mov pc, lr
.endm
@ -52,11 +60,13 @@
* to avoid dirtying the data cache.
*/
.macro testop, instr, store
add r1, r1, r0, lsr #3
and r3, r0, #7
mov r0, #1
ands ip, r1, #3
strneb r1, [ip] @ assert word-aligned
and r3, r0, #31
mov r0, r0, lsr #5
save_and_disable_irqs ip
ldrb r2, [r1]
ldr r2, [r1, r0, lsl #2]!
mov r0, #1
tst r2, r0, lsl r3
\instr r2, r2, r0, lsl r3
\store r2, [r1]

10
arch/arm/lib/changebit.S
View file

@ -12,12 +12,6 @@
#include "bitops.h"
.text
/* Purpose : Function to change a bit
* Prototype: int change_bit(int bit, void *addr)
*/
ENTRY(_change_bit_be)
eor r0, r0, #0x18 @ big endian byte ordering
ENTRY(_change_bit_le)
ENTRY(_change_bit)
bitop eor
ENDPROC(_change_bit_be)
ENDPROC(_change_bit_le)
ENDPROC(_change_bit)

11
arch/arm/lib/clearbit.S
View file

@ -12,13 +12,6 @@
#include "bitops.h"
.text
/*
* Purpose : Function to clear a bit
* Prototype: int clear_bit(int bit, void *addr)
*/
ENTRY(_clear_bit_be)
eor r0, r0, #0x18 @ big endian byte ordering
ENTRY(_clear_bit_le)
ENTRY(_clear_bit)
bitop bic
ENDPROC(_clear_bit_be)
ENDPROC(_clear_bit_le)
ENDPROC(_clear_bit)

11
arch/arm/lib/setbit.S
View file

@ -12,13 +12,6 @@
#include "bitops.h"
.text
/*
* Purpose : Function to set a bit
* Prototype: int set_bit(int bit, void *addr)
*/
ENTRY(_set_bit_be)
eor r0, r0, #0x18 @ big endian byte ordering
ENTRY(_set_bit_le)
ENTRY(_set_bit)
bitop orr
ENDPROC(_set_bit_be)
ENDPROC(_set_bit_le)
ENDPROC(_set_bit)

9
arch/arm/lib/testchangebit.S
View file

@ -12,9 +12,6 @@
#include "bitops.h"
.text
ENTRY(_test_and_change_bit_be)
eor r0, r0, #0x18 @ big endian byte ordering
ENTRY(_test_and_change_bit_le)
testop eor, strb
ENDPROC(_test_and_change_bit_be)
ENDPROC(_test_and_change_bit_le)
ENTRY(_test_and_change_bit)
testop eor, str
ENDPROC(_test_and_change_bit)

9
arch/arm/lib/testclearbit.S
View file

@ -12,9 +12,6 @@
#include "bitops.h"
.text
ENTRY(_test_and_clear_bit_be)
eor r0, r0, #0x18 @ big endian byte ordering
ENTRY(_test_and_clear_bit_le)
testop bicne, strneb
ENDPROC(_test_and_clear_bit_be)
ENDPROC(_test_and_clear_bit_le)
ENTRY(_test_and_clear_bit)
testop bicne, strne
ENDPROC(_test_and_clear_bit)

9
arch/arm/lib/testsetbit.S
View file

@ -12,9 +12,6 @@
#include "bitops.h"
.text
ENTRY(_test_and_set_bit_be)
eor r0, r0, #0x18 @ big endian byte ordering
ENTRY(_test_and_set_bit_le)
testop orreq, streqb
ENDPROC(_test_and_set_bit_be)
ENDPROC(_test_and_set_bit_le)
ENTRY(_test_and_set_bit)
testop orreq, streq
ENDPROC(_test_and_set_bit)

2
arch/arm/mach-dove/Kconfig
View file

@ -9,7 +9,7 @@ config MACH_DOVE_DB
Say 'Y' here if you want your kernel to support the
Marvell DB-MV88AP510 Development Board.
config MACH_CM_A510
config MACH_CM_A510
bool "CompuLab CM-A510 Board"
help
Say 'Y' here if you want your kernel to support the

5
arch/arm/mach-realview/Kconfig
View file

@ -19,7 +19,7 @@ config REALVIEW_EB_A9MP
config REALVIEW_EB_ARM11MP
bool "Support ARM11MPCore Tile"
depends on MACH_REALVIEW_EB
select CPU_V6
select CPU_V6K
select ARCH_HAS_BARRIERS if SMP
help
Enable support for the ARM11MPCore tile fitted to the Realview(R)
@ -36,7 +36,7 @@ config REALVIEW_EB_ARM11MP_REVB
config MACH_REALVIEW_PB11MP
bool "Support RealView(R) Platform Baseboard for ARM11MPCore"
select CPU_V6
select CPU_V6K
select ARM_GIC
select HAVE_PATA_PLATFORM
select ARCH_HAS_BARRIERS if SMP
@ -45,6 +45,7 @@ config MACH_REALVIEW_PB11MP
the ARM11MPCore. This platform has an on-board ARM11MPCore and has
support for PCI-E and Compact Flash.
# ARMv6 CPU without K extensions, but does have the new exclusive ops
config MACH_REALVIEW_PB1176
bool "Support RealView(R) Platform Baseboard for ARM1176JZF-S"
select CPU_V6

50
arch/arm/mm/Kconfig
View file

@ -390,7 +390,7 @@ config CPU_PJ4
# ARMv6
config CPU_V6
bool "Support ARM V6 processor" if ARCH_INTEGRATOR || MACH_REALVIEW_EB || MACH_REALVIEW_PBX || ARCH_DOVE
bool "Support ARM V6 processor" if ARCH_INTEGRATOR || MACH_REALVIEW_EB || MACH_REALVIEW_PBX
select CPU_32v6
select CPU_ABRT_EV6
select CPU_PABRT_V6
@ -402,16 +402,18 @@ config CPU_V6
select CPU_TLB_V6 if MMU
# ARMv6k
config CPU_32v6K
bool "Support ARM V6K processor extensions" if !SMP
depends on CPU_V6 || CPU_V7
default y if SMP
help
Say Y here if your ARMv6 processor supports the 'K' extension.
This enables the kernel to use some instructions not present
on previous processors, and as such a kernel build with this
enabled will not boot on processors with do not support these
instructions.
config CPU_V6K
bool "Support ARM V6K processor" if ARCH_INTEGRATOR || MACH_REALVIEW_EB || MACH_REALVIEW_PBX
select CPU_32v6
select CPU_32v6K
select CPU_ABRT_EV6
select CPU_PABRT_V6
select CPU_CACHE_V6
select CPU_CACHE_VIPT
select CPU_CP15_MMU
select CPU_HAS_ASID if MMU
select CPU_COPY_V6 if MMU
select CPU_TLB_V6 if MMU
# ARMv7
config CPU_V7
@ -433,25 +435,33 @@ config CPU_32v3
bool
select TLS_REG_EMUL if SMP || !MMU
select NEEDS_SYSCALL_FOR_CMPXCHG if SMP
select CPU_USE_DOMAINS if MMU
config CPU_32v4
bool
select TLS_REG_EMUL if SMP || !MMU
select NEEDS_SYSCALL_FOR_CMPXCHG if SMP
select CPU_USE_DOMAINS if MMU
config CPU_32v4T
bool
select TLS_REG_EMUL if SMP || !MMU
select NEEDS_SYSCALL_FOR_CMPXCHG if SMP
select CPU_USE_DOMAINS if MMU
config CPU_32v5
bool
select TLS_REG_EMUL if SMP || !MMU
select NEEDS_SYSCALL_FOR_CMPXCHG if SMP
select CPU_USE_DOMAINS if MMU
config CPU_32v6
bool
select TLS_REG_EMUL if !CPU_32v6K && !MMU
select CPU_USE_DOMAINS if CPU_V6 && MMU
config CPU_32v6K
bool
config CPU_32v7
bool
@ -607,8 +617,6 @@ config CPU_CP15_MPU
config CPU_USE_DOMAINS
bool
depends on MMU
default y if !CPU_32v6K
help
This option enables or disables the use of domain switching
via the set_fs() function.
@ -623,7 +631,7 @@ comment "Processor Features"
config ARM_THUMB
bool "Support Thumb user binaries"
depends on CPU_ARM720T || CPU_ARM740T || CPU_ARM920T || CPU_ARM922T || CPU_ARM925T || CPU_ARM926T || CPU_ARM940T || CPU_ARM946E || CPU_ARM1020 || CPU_ARM1020E || CPU_ARM1022 || CPU_ARM1026 || CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_V6 || CPU_V7 || CPU_FEROCEON
depends on CPU_ARM720T || CPU_ARM740T || CPU_ARM920T || CPU_ARM922T || CPU_ARM925T || CPU_ARM926T || CPU_ARM940T || CPU_ARM946E || CPU_ARM1020 || CPU_ARM1020E || CPU_ARM1022 || CPU_ARM1026 || CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_V6 || CPU_V6K || CPU_V7 || CPU_FEROCEON
default y
help
Say Y if you want to include kernel support for running user space
@ -644,7 +652,7 @@ config ARM_THUMBEE
config SWP_EMULATE
bool "Emulate SWP/SWPB instructions"
depends on !CPU_USE_DOMAINS && CPU_V7 && !CPU_V6
depends on !CPU_USE_DOMAINS && CPU_V7
select HAVE_PROC_CPU if PROC_FS
default y if SMP
help
@ -681,7 +689,7 @@ config CPU_BIG_ENDIAN
config CPU_ENDIAN_BE8
bool
depends on CPU_BIG_ENDIAN
default CPU_V6 || CPU_V7
default CPU_V6 || CPU_V6K || CPU_V7
help
Support for the BE-8 (big-endian) mode on ARMv6 and ARMv7 processors.
@ -747,7 +755,7 @@ config CPU_CACHE_ROUND_ROBIN
config CPU_BPREDICT_DISABLE
bool "Disable branch prediction"
depends on CPU_ARM1020 || CPU_V6 || CPU_MOHAWK || CPU_XSC3 || CPU_V7 || CPU_FA526
depends on CPU_ARM1020 || CPU_V6 || CPU_V6K || CPU_MOHAWK || CPU_XSC3 || CPU_V7 || CPU_FA526
help
Say Y here to disable branch prediction. If unsure, say N.
@ -767,7 +775,7 @@ config NEEDS_SYSCALL_FOR_CMPXCHG
config DMA_CACHE_RWFO
bool "Enable read/write for ownership DMA cache maintenance"
depends on CPU_V6 && SMP
depends on CPU_V6K && SMP
default y
help
The Snoop Control Unit on ARM11MPCore does not detect the
@ -823,7 +831,7 @@ config CACHE_L2X0
config CACHE_PL310
bool
depends on CACHE_L2X0
default y if CPU_V7 && !CPU_V6
default y if CPU_V7 && !(CPU_V6 || CPU_V6K)
help
This option enables optimisations for the PL310 cache
controller.
@ -856,10 +864,10 @@ config ARM_L1_CACHE_SHIFT
default 5
config ARM_DMA_MEM_BUFFERABLE
bool "Use non-cacheable memory for DMA" if CPU_V6 && !CPU_V7
bool "Use non-cacheable memory for DMA" if (CPU_V6 || CPU_V6K) && !CPU_V7
depends on !(MACH_REALVIEW_PB1176 || REALVIEW_EB_ARM11MP || \
MACH_REALVIEW_PB11MP)
default y if CPU_V6 || CPU_V7
default y if CPU_V6 || CPU_V6K || CPU_V7
help
Historically, the kernel has used strongly ordered mappings to
provide DMA coherent memory. With the advent of ARMv7, mapping

1
arch/arm/mm/Makefile
View file

@ -90,6 +90,7 @@ obj-$(CONFIG_CPU_XSC3) += proc-xsc3.o
obj-$(CONFIG_CPU_MOHAWK) += proc-mohawk.o
obj-$(CONFIG_CPU_FEROCEON) += proc-feroceon.o
obj-$(CONFIG_CPU_V6) += proc-v6.o
obj-$(CONFIG_CPU_V6K) += proc-v6.o
obj-$(CONFIG_CPU_V7) += proc-v7.o
AFLAGS_proc-v6.o :=-Wa,-march=armv6

6
arch/arm/mm/abort-ev6.S
View file

@ -20,11 +20,11 @@
*/
.align 5
ENTRY(v6_early_abort)
#ifdef CONFIG_CPU_32v6K
clrex
#else
#ifdef CONFIG_CPU_V6
sub r1, sp, #4 @ Get unused stack location
strex r0, r1, [r1] @ Clear the exclusive monitor
#elif defined(CONFIG_CPU_32v6K)
clrex
#endif
mrc p15, 0, r1, c5, c0, 0 @ get FSR
mrc p15, 0, r0, c6, c0, 0 @ get FAR

2
arch/arm/mm/mmap.c
View file

@ -31,7 +31,7 @@ arch_get_unmapped_area(struct file *filp, unsigned long addr,
struct mm_struct *mm = current->mm;
struct vm_area_struct *vma;
unsigned long start_addr;
#ifdef CONFIG_CPU_V6
#if defined(CONFIG_CPU_V6) || defined(CONFIG_CPU_V6K)
unsigned int cache_type;
int do_align = 0, aliasing = 0;